Wood-stove



2 Sheets-Sheet 1.

E. HOSFORD.

Base Burning Wood Stove.

'No. 86,073. PatntedJany19,1869.

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Wqwgy ELIH U HOSFORD, OF CH ICAGO, ILLINOIS.

Letters Patent No. 86,073, dated J anua'rg 19, 1869.

BASE-BURNING- WOOD-STOVE.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, ELIHU H OSFORD, of Chicago, in the county of Cook, and in the State of Illinois, have invented an Improved Base Burning \Vood-Stove; and do hereby declare that the following is a full, clear, and exacttdescription thereofi reference being bad to the accompanying drawings, making a part of this specification, in which-,

Figure 1 is a front elevation of the stove.

Figure 2 is a side elevation of the same.

fi Figure 3 is a vertical cross-section on the line xx of Figure 4 is a vertical longitudinal section on the line z zof fig. 1.

Letters of like name andkind refer to like parts in each of the figures.

The object of myinvention is to adapt the downward draught to stoves for burning wood; and to this end,

It consists in the employment of a box-stove, of the usual form, in which is a fuelchamber, somewhat smaller and shorter than the stove,'and open at its front end and bottom, the former of which is secured to the front plate so as to leave a space or fiue between the sides, rear end, and top of said fuel-chamber and stove, for the upward passage of the heated air.

It further consists in the use of an air-space, extending around the base of the fuel-chamber, and open at its ends for the admission of a current of cool air, to enable the base of saidfuel-chamber to withstand the intense heat to which it is subjected.

It also consists in the peculiar form and construction of the grate.

In the annexed drawings- A represents the bed-plate,

B, the sides,

0 and G, the ends, and p D, the top .of a box-stove of the usual form.

E represents the fuel-chamber, open at its bottom and front end,- the latter of which is secured to the front plate 0, whileits rear end is supported by legs resting upon the bottom of the ash-pit.

Said fuel-chamber is somewhat smaller than the shell of the stove, so that a'space is left between them, F, which serves as a flue through which the heated air passes to the chimney.

Extending around the base of the fuel-chamber E, is an air-space, c, to which cold air is freely admitted through openings 0 c in the front plate 0.

Grepreseuts thefuel-supporting plate, corresponding in shape to the base of the fuel-chamber, supported by legs resting upon the bottom of the ash-pit, its upper surface, at the edges, being very near to the base of said chamber, so that sufficient space only is left between them to permit of the passage of the gaseous products of combustion and of the ashes.

The fuel-supporting plate is highest inthe centre,

from whence it slopes downward to either side. The same incline is also given to the rear end, as-shown in fig. 4.-

secured directly beneath the fuel-supporting plate G, and corresponding in size therewith, is 'a plate of metal, H, between which and said fuel-supporting plate is left a sutficient space to allow a current of cool air to pass freely for the purpose of preventing the fuelsupporting plate from becoming overheated.

The air is admitted through an opening, 0, in the front plate 0, and after passing between said plate and the fuel-supporting plate, min'gles with the gas and smoke from the fuel-chamber, in such a proportionas to enable them to be entirely consumed.

The door I is of' the usual form and construction, and is provided with openings, '5 i, for the. admission of air, which are closed, when desired, by a slide of the ordinary construction.

The hearth a is made to close tightly.

The operation of this device will be readily under stood.

Fuel being placed within the chamber, and ignited, the smoke and gas, which ordinarily escape through the smoke-flue, are drawn downward, through the burning fuel, into the space beneath the chamber, where they are met by a current of fresh air passim out fiombetween the fuel-supporting plate and plate H, and entirely consumed, producing the most intense heat.

Thecurrent of hot air is thrown outward against the side and rear plates, and from thence passes upward through the flue F, over the top of the fuel-chamber, into the pipe d, as indicated by the red arrows.

The burning gas produces an intensely white flame, and, by providing a number of openings in the side plates, near the bottom, and covering them withmica, a beautiful effect will be produced, the light from an ordinary fire being sufi'icient to illuminate a room of moderate size.

It has been found that, if the openings in the plate are covered with thin perforated plate, and the mica, also perforated, enclosed in a frame outside, so as to leave alittle space between it and said plate, a better effect will be produced, and the mica last much longer than if placed next to the frame.

There are ma-ny advantages possessed by this stove over any in use intended for burning wood; among which are- First, by its use the gas and smoke are entirely consumed, by which means a saving of from forty to sixty per cent. of the heating-properties of the fuel is effected.

Secondly,the mostintense heat is at the base of the stove, where it is most needed for warming the room, instead of being above the centre or at the top, as in most stoves.

Thirdly, the air bcin g admitted through the feed-door, above the fuel-supportin g plate, no dust, smoke,- or ashes can pass into the room while supplying fresh fuel, as the only efi'eet produced by opening said door is to admit a larger supply of air to the fuel, and increase the combustion. v v

Fourthly,.the current of air, at all times passing into the stove through the opening in the front plate 0, assists materially inventila'ting a room.

Fifthly, its heating-eapa'eity is greater than that of other stoves of equal size, as it is not only much hotter at the "base than they are at any point, but the upper portions have also a much higher degree of temperature, occasioned by passing the heated air around the sides, end, and top, instead of allowing it to spread through. the entireinterior of the stove.

Having thus ofully'set forth the nature and merits of my invention,

What I claim as new, and desire to secure by Let ters Patent, is-- same 2 The within-described stove, consisting of the box or shell A, B, G O, and D, fuel-chamber E, provided with the air-space e, hot-air flue F, and fuel-supporting plate G, all constructed, and arranged substantially as and for the. purpose described. 7

Also, the .fuelrcham'ber E, provided with the ai'r-spa'ee e, substantially as and for the purpose shown.

Also, the filel-suppoiting plate G, constructed and arrangedto operate substantially as herein shown and described.

Intestimony that I claim the foregoing, I have here unto set my hand, this 4th day of January, 1869'.

'ELIHU HOSFORD. Witnesses:

GEO. S. PBINDLE, EDM. F. BROWN. 

